Convert MP3 to AMR

Convert MP3 files to AMR format online for free. No upload required, 100% private.

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MP3AMRRe-encoding

Converting between two lossy formats (MP3 → AMR) involves re-encoding, which may cause additional quality loss. For best results, convert from the original source file when possible.

About MP3

MP3

MPEG-1 Audio Layer III

MP3 is the most widely used lossy audio compression format. It achieves significant file size reduction while maintaining acceptable audio quality for most listeners.

Extension
.mp3
Developed By
Fraunhofer Society
Released
1993
Compression
Lossy

Typical Use Cases

Music streamingPodcastsPortable music playersWeb audio

Pros

  • • Universal compatibility
  • • Small file size
  • • Wide software support

Cons

  • • Lossy compression
  • • Quality loss at low bitrates
  • • No metadata flexibility

About AMR

AMR

Adaptive Multi-Rate Audio Codec

AMR is a speech audio codec optimized for voice recording. It is commonly used in mobile phones for voice memos and MMS messages.

Extension
.amr
Developed By
ETSI
Released
1999
Compression
Lossy

Typical Use Cases

Voice recordingMobile phone audioMMS messagesVoIP

Pros

  • • Very small file size
  • • Optimized for speech
  • • Mobile device support

Cons

  • • Poor music quality
  • • Speech only
  • • Limited compatibility